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(No Model.) 2 Sheets-Sheet'I 1.

J. CASEY.

POR-T HOLE STOPPER. A No.. 546,914. 'Patented Sept. 24, 1895.

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J. CASEY.

PORT HOLE STOPPER.

No. 546,914. Patentedsept. 24, 1895.

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JAMES CASEY, OF LONDON, ENGLAND.

PORT-HOLE STOFPER.

SPEUIFICATION forming part of Letters Patent No. 546,914, dated September 24, 1895. Application led April 1'7, 1895- Serial No. 546,058. (No model.) Patented in England February 5, 1895, NO- 2,543'

To all whom it may concern:

t Be it known that I, JAMES CASEY, consulting engineer, a subject of the Queen of Great Britain, residing at 10 Philpot Lane, London, E. O., England, have invented new and usefulImprovements in the Construction of Port- Holes for Ships and Forts, Bulk-Head Doors, and the Like, (for which I have obtained a patent in Great Britain, No. 2,543, dated February 5, 1895,) of which the following is a specification.

My invention relates to a new method of constructing port-holes for ships and forts, bulk-head doors, embrasures, torpedo-tubes, and the like, for the purpose of affording greater facilities in working the same than at present exist, and for rendering the same more secure against the entrance of sea-water and damage arising from the impact of shot and shell.

According to my invention I construct doors to port-.holes for ships and forts, bulk-heads, embrasures, torpedo-tubes, and the like of a globular form, and provide means for rotating the same in their cases and seatings, such' globes being formed hollow and provided with suitable openings arranged to correspond with similar openings in the casings, so that upon the globular door being rotated in one direction the door is effectually and securely closed, and when rotated in an opposite direction a clear way is provided through the globe seating and casing.

In order that my said invention may be particularly described and ascertained, reference is hereby made to the accompanying drawings, in which similar letters of reference indicate corresponding parts.

Figure 1 is a sectional elevation illustrating the application* of my invention to ships deck-openings for purposes of light, ventilation, or transit, in lieu of the usual method of fitting hatchways on deck and the like. Fig. 2 is a sectional elevation illustrating the application of my invention to bulk head doors, port-holes for ships and forts, embrasures, and the like. Fig. 3 is an elevation of the door at right angles to Fig. 2.

The globular door h is fitted in the casing a. and works in fixed and adjustable metallic bearings just under the deck u.

y is the xed seating.

f is an adjustable seating, upon which a rubber or other elastic packing-ring f3 is fitted and covered by a packing-ring f4, regulated by screws y. The door, packing, and packing-ring are held in position by the ring a, bolted to the casing a independently of the screws y. The casing@ is formed in two parts, suitably bolted together.

c is the spindle attached to the door, fitted with a crank, handle, or levert) for causing it to rotate for opening and closing the same, the lever being carried up through the deck, or otherwise operated from the deck, if preferred. The usual deck-grating u is fitted above the door. One or more handle or handles (or foot-treads) wis or are provided for enabling the men to ascend and descend through the same when open.

Fig. 2 illustrates the application of my improved door to a bulk-head, in lieu of the usual sliding bulk-head door. is the bulk-head, to which the two parts of the casing a a are bolted and rendered fluid-tight. The globular door is formed with a level floor b', as shown. The door is packed and actuated in a similar manner to that shown in Fig. 1. The door is shown closed in Figs. l and 3 and open in Fig. 2.

In fitting doors to port-holes for ships and forts and the' like, as aforesaid, I introduce and combine therewith a cushion of rubber, as shown at f3, to minimize the edects of concussions arising from the action of shot and shell or collision. The packing-rings and cushions are so litted as to be conveniently removed and renewed. The convex surface of the door is advantageous in resisting the impact of shot and shell.

Although I have described my invention as applied to port-holes for ships and forts and bulk-heads, it is obvious that, with suitable modifications, it maybe applied to many other structures in connection with ships and forts, such as scuttles, torpedo-boat tubes, and analogous applications.

I claim- 1. In the construction of the deck-opening of a ship, the combination with a sectional casing, of a mutilated hollow ball having through way-openings and rotatable within said sectional casing, ball-supporting rings inclosing spherical segments of said ball,

packing for seeming a water-tight joint about the rings, and means for rotating the ball from the exterior of the sectional casing, substantially as described.

2. In the construction of the deck-opening of a ship, the combination with a sectional casing, of a mutilated, hollow ball having through way-openings and rotatable within said sectional casing, ball-supporting rings inclosing portions ofthe ball, elastic packingrings bearing against the ballsupporting rings, devices for tightening the packingrings against the supporting rings, a shaft extending from the ball through the casing, and means for operating the shaft t0 rotate the ball, substantially as described.

3. In the construction of ships deck openings, the combination of a mutilated hollow ball b, having through-Way openings; a casing a formed in two parts; a spindle c integral with the ball b; ringsfandf inclosing spherical segments of the ball of equal areas; an elastic packing ring f3, and packing ring f4,

regulated by screws y in the covering ring z; the globe being itted with internal handles or foot treads w, and the spindle c being fitted with a crank v for causing the globe b to rotate, substantially as and for the pur- JAMES CASEY. Witnesses:

GEORGE C. DOWNING, T. F. BARNES. 

